If you're Bragoon of Black Dragonflight(armory link under name was broken), you could replace your glove enchant with 15 expertise instead of the 2% threat and like the guy above me said, eat Rhinolicious Wyrmsteaks (1xWorm meat, 1xRhino meat, 1xSpice). 55 rating in total from those two and you should be around 27 Expertise.
Could always go with the expertise enchant on bracers, as well as if thats your character replacing the +8def/+12 stm gem on your belt for a 8exp/12stm. might even want to replace your straight up rare quality stm gems with 8exp/12stm gems.
Belt gem replaced.
Still only at 21 expertise.
With the buff food im at like 24.
If i was to put a 15 expertise on it would be to my bracers. but Im only going to do that if nothing drops expertise wise tonight in vent
Hrm, personally I find expertise to be a very important to your tanking once you are geared.
If you check out my armory, I gem everything that I can with expertise/stam gems.
I have 52 expertise in my threat set(pretty much 0% parries) and the threat I have is OUT OF CONTROL. You would be amazed what it is like to have 152 hit rating(5% ish hit I think) and then no chance to be parried/dodged.
I can often just destroy most other tanks strait out if its one-on-one threat as long as I have incoming rage(patchwerk type stuff).
In my expertise set I still have around 28.5k hp unbuffed, 26% block, 1171 block value, great stats.
If you want, do not just look at the soft cap of dodge, go above that. Believe me, healers can keep a 36k buffed tank up as easily as a 40k buffed tank in current content.
Once your dps starts lawling at you with 6k+ dps consistently you will want the threat.